Decide if the following sentences are true or false. You have to correct the false ones. a) There are four kinds of coal depending on their carbon content.
b) Coal is usually found in liquid state.
c) Fossil fuels are the result of the descomposition of plants and animals from the past.
d) Petroleum is the cheapest source of energy.

a) There are four kinds of coal depending on their carbon content. ⇒ False

b) Coal is usually found in liquid state. ⇒ False

c) Fossil fuels are the result of the descomposition of plants and animals from the past. ⇒ True

d) Petroleum is the cheapest source of energy.⇒ True

a symbiotic relationship with the mitochondria

answer: grassland biomes are closer to the equator and receive more rain.

grasslands are biomes that are dominated by grasses rather shrubs and trees. savanna are biomes that exhibit grasses, shrubs and small tree as vegetation. grasslands are located near the equator of the earth. these are found in north america. savanna biomes are found in africa, south america, australia and india. grassland exhibit moderate climatic conditions, it receives   amount of rainfall higher than savanna.   therefore, savanna exhibit dry and hot climatic conditions.